REFORM
TYPE 5 VKA KNIFE GRINDER W/ AUTOMATED HONING ATTACHMENT
Machine Information
Machine Base
- Box/cellular construction
- Stress relieved base
- Interior of base is open for easy access and cleaning
- Easily aligned and leveled from outside along the length of the machine
Machine Ways
- Accuracy along the length of the machine is better than .0005”/40” absolute
- Machine ways are precisely ground to accommodate hardened and ground steel bands
- Bands are placed on the top and inside of the carriage ways
- The ways, under the bands, are specially coated to prevent rust
- Bands can be easily and inexpensively replaced to maintain the grinders precise accuracy
- Adjustable way wipers also included
Grinding Head Carriage
- Easy access, operation, wheel changing, and adjustment from the front of the machine
- Designed with distance between bearings for stability and accuracy
- Provides even load distribution and maximum rigidity
- Carried on four horizontal adjustable race roller bearings
- Four bearings are used for carriage side alignment.
- Grinding motor head is mounted on adjustable, hardened, ground guides
- Anti-Lift Carriage Bearings
Primary Grinding Had
- 21.7HP
- 1800 RPM continuous duty rating
- Dynamically balanced & manufactured by Reform Motor Division
- Spindle mounted in precision taper roller bearings
- Bearing play removed with a nut assembly on the grinding head motor
- Motor is enclosed and sealed
- Windings are encapsulated in epoxy
- Head is tiltable for concave & surface grinding
- Reversing switch for main grinding motor included
- Head is cross-adjustable for hollow positioning
10” dia. grinding wheel & backing plate with a quick-change assembly
Grinding Head Down Feed & Control
- Servo motor for vertical feed of the primary honing head
- Vertical oversized ball screw eliminates any play
- The ball screw is axially pre-tightened to ensure automatic weight balancing
- The guide ways, spindle gear, and ball screws are mounted under covers
- Way wipers to protect guides
- Pre-tested with limit switches
- Power rise and fall to grinding head assembly via electronic hand-wheel control
- Automatic down feed is infinitely variable .0002” to .008” per pass (0.005 to 0.2 mm/pass)
- Impulse down feed also included
- For maximum available horsepower usage during grinding process
- Used for wheel ware compensation
- A.C. Servo motor automatic electronic down-feed system
- Digital electronic control & position readout
- Set finish point, grinder will proceed at a set down feed per stroke
- Spark-Out Cycle, which is a preset number of strokes back and forth
- Head returns to present location following full cycle
Grinding Programs
- Grinding Cycle
- Roughing
- Finishing
- Spark Out
- Return of Head to Start Position for re-start
Longitudinal Carriage Feed System
- A.C. Servo Drive – Infinitely variable feeds to the carriage (2” to 100 FPM)
- The feed system utilizes a rack and pinion drive system (Helical / Angle Cut)
- Rack is in approximately 40” long sections doweled into position for easy maintenance
- Grinding Length can be easily varied by movement of length stops
- Carriage is reversed by non-contacting proximity switches
- Longitudinal travel can be easily started or stopped by electrical means
- The Helical Pinion is belt driven so if there is a reverse failure:
- Belt will slip rather than hurt the pinion
- Carriage will go to the end of the machine and contact rubber hydraulic shock absorbers
Coolant System
- The coolant tank is at the rear along the length of the grinder
- Coolant travels through the spindle of the main motor and outer edge of the grinding head
- Mechanical valves control of flow to each coolant nozzle
- Full flush cooling ensures a cool knife, clean wheel, and super wheel life
- Cooling through the spindle also ensures constant motor temperature
- The coolant, with the swarf, flows into the tank for final separation and cooling
- Wash down hose supplied to clean knives and bed when grinding is complete
- Optional Accessories: Automatic coolant cleaners
Electrical Equipment
- Touch screen control system mounted on electrical cabinet
- Remote Control furnished Mounted on the grinding carriage
- Y-Delta starter for main grinding head
- Soft start or low amperage start
- Ammeter and hour meter for main grinding head
- PLC Control
- Electrical panel pre-wired and at left end of machine
- Start, switch, and overload controls to U.L. and C.S.A. standards
- Controls are clearly arranged, comprising the main start-stop buttons
- All electrical components are Siemens
- Safety systems included:
- Feed will not start unless bed is magnetized
- Down feed of grinding head is locked
- Master All-Stop Button
- Electronic Control Cabinet with conduit wiring acc. VDE regulation to UL/CSA standards
- Coolant control, free standing, pre-wired for your voltage to machine
Magnetic Clamping Table
- 6 inch (150 mm) wide magnetic bed
- Sinusoidal pole for maximum holding power
- DQ Magnetism for complete magnetism to front edge of the bed
- Large turning shaft with pinion and gear turning
- Large micrometer dial to magnetic bed
- Special quick set-up knife aligning bar
- Magnetic beds can be reground 12 mm or 0.45” as any ware or roughness develops
Micro-Beveling & Honing Head
The honing spindle has, apart from the vertical and horizontal axis, a swiveling head (270 degrees), which is used for swiveling the spindle to the different angles. After swiveling to the corresponding position, the head is Quick Clamped at the appropriate angle.
- For Face, (front) & back honing & grinding
- Equipped with swivel base with quick adjust clamps for precise secondary angle setting
- Equipped with vertical and horizontal bed ways and H.D. Base Assembly.
- Horizontal feed (Y-axis) by hand wheel
- Vertical feed (Z-axis) by hand wheel & power up/down for quick positioning
- Motor power 2 HP (1.5 kW), 3450 RPM
- Precision spindle assembly
- Also included Main Machine Base Extension for full-length Grinding & Honing.
- ZS attachment mounted on main carriage
- Normally a cup type (cylinder) wheel
- Or formed wheel is used 5” diameter
- You can mount 2 Borazon wheels back to back so you can micro bevel/hone both under the knife edge and on top of the knife edge automatically
- Electrics, completely wired with all control buttons – to suit grinder electrics
Included with ZS Micro Beveling / Honing Head
- Double width carriage, which spreads the carriage roller bearings apart as much as possible. This gives the carriage & grinding wheels even more stability
- Automatic electronic programmable feed (up/down-feed) to the ZS head
- Utilizing a Servo down-feed with Ball Screw for control and accuracy. The Feed of the Honing Head is through a Servo motor which is directly coupled to a vertical oversized ball screw with double nut assembly
- Digital position readout to the vertical axis of the ZS attachment
- Motorized vertical rise and fall
- Provides fully automatic down-feed or up-feed to the ZS attachment
Electrical Central Lubrication System
- Automatically distributes lubrication to key carriage components
- Automated system controlled by timer
- Eliminates the need for manual lubrication of many key components